Spectacle-frame-coating machine



A. E. MAYNARD SPECTACLE FRAME COATING MACHINE Filed June 11 1920 2Sheets-Sheet l INVENTOR' A-E-NAY/VARD EIEATO%NEYS 0 Fi-I May 8, 1923 v1,454,177 I A. E. MAYNARD I SPECTACLE FRAME COATING MACHINE Filed June11, 1920 i 2 Sheets-Sheet 2 INVENTOR A- MAYNARD ATTORNEYS Patented May8, 1923 i T i S ATET tries.

ALBERT E. BLAYN'ARD, OF SOUTHBRIDGE, MASSACHUSETTS, ASSIGNOR TO AMERICANOPTICAL COMPANY, OF SOUTHBR-IDGE, MASSACHUSETTS, A VOLUNTARY ASSOCIA-TION OF MASSACHUSETTS.

srnoraonn-raamn-coarrne 'Aoriinn Application filed June 11,

7. 0 (ZZZ whom it may concern:

Be it known that I, ALBERT E. MAYNARD, a citizen of the United States,residing at vtlouthbridge, inthe countyof or-caster and State ofMassachusetts, have invented certain new and useful Improvements inSpec- -tacle-Frame-Coating Machines, of whichthe following is aspecification; 7

This invention ,:relates to improvements in spectacle making machinesand .hasrparticu- ,lar reference to a novel and improved construction ofmachine for use in the formation of temples, eye Wires or otherparts-for spec- .tacle mountings, in whichthe same are to be providedwith anon-metallic coating or lacquer.

)ne of the leading objects of the present invention is the provision ofa satisfactory construction of machine for use in the formation of acoating or lacquer on a large number of parts'for a completed spectacleor eyeglass frame in a simple and efficient manner.

A further object of the present invention [is the provision ofa machinewhich shall automatically.withdraw the articles in such manner from thecoating bathtliat the surface tension and adhesive properties of'thebath will'cause a uniform coating to be deposited on the severalarticles.

. A further object of the present invention is the provision of a noveland improved holder for use in connection with my machinewhich willserve to engage a plurality of articles and retain them in properrelationship during the several steps in the process of coating thearticles, thus facilitating the process of manufacture.

Other objects and advantages of my improvedconstruction should bereadily apparent by reference to the following specification taken inconnection with the accompanying. drawings, and it will be understoodthat I may make any modifications in the specific details ofconstruction shown and described within the scope of the appended claimswithout departing from or exceeding the spirit of the invention.

Figure I represents a front view of a machine embodying my improvements.

Figure II represents a side elevation thereof.

Figure IIIrepresents a vertical sectional View through one of the racks.

1920. Serial Nb, 388,127.

In the drawings, thenumeral 1- designates the base or frame of themachine'having' rising therefrom the guides 2 which are preferably ofdiamond or similar shape in cross.

section and have rotating thereontheguide wheels?) of the carriage 4t.It will be noted that I have shown these guide wheels as con sisting oftwo at one side of the machine and an intermediate one at the oppositeside,'=-,

while the carriage is in theformof a spring frame member resilientlypress ng the guide wheels towards the supports so that the. car-[ riageis held in an extremely steady position with suflicient frictionalengagement'to pre- This drum is loosely mounted upon the shaft 5 andheld to rotate therewith when desired through a suitable clutchmechanism,-such" as the washers 8 and 9 on the shaft, the washer 8 beingsuitably rigidly secured on or formed integral with the, shaft'5. andthe washer 9 being held against the adjacent flange 7 of the drum 6 by aspring 10 whose tension may be regulated through adjustment of the nut11. Thepurpose-of this construction is to allow of longitudinal depression of the frame or, carriage 4 when desired at a rapid rate, while theclutch will hold the drum to turn ata very slow rate to wind up thecarriage as the shaft 5 is rotated; any suitable mechanism, such as thelarge worm gear 12,,worml3 and drive pulleylt, may

be appliedto-aid in reducing the speed from the driving member, such asthe motor 15 to the shaft 5 and insure themovement being at a slow butsteady or non-Jerking rate.

Secured to the lower part of the carriage i are the transverse arms 16provided with the recesses or notches 17 to receive the arms than asingle coat is desired.

round rod 21 slotted about half way through, as at 22, to provide anindividual slot for each temple, thus guiding the temple so that it willhang straight, and having sufficiently close engagement therewith sothat swinging or dropping off tendency of the temple is reduced to aminimum.

In operation a bath of suitable lacquer or coating material is placed inthe receptacle 23 and the carriage a lowered till the articles to becoated are immersed to the desired depth, after which the shaft 5 andthus the drum 6 are rotated to slightly wind up the flexible cord orconnection member 24, gradually withdrawing the articles to be coatedfrom. the bath. This operation may be repeated any desired number oftimes until a coating of the desired thickness, color or flexibility hasbeen provided. In certain instances a single coat will be foundsuificient, while in other cases more Also in the case of templesorother articles it may be desirable to have a slight enlargement theterminus, such as the pear tip and ball tip, or other configuration torelieve the ear.

I After the temple is thus coated it is allowed todry and harden, whichmay be facilitated by revolving in a centrifugal machine. Theconstruction of this machine may be embodied in a separate application.

I would call particular attention to the advantage attained by providinga temple or "frame coated in this manner, in that it secures thestrength and rigidity advantages "the size or weight of the parts and ofmaximum desirable appearance.

If desired, in place of a special article clamping device upon thecentrifugal machine, however, to steady the articles during the entirehandling operation, and to facilitate preparation of the racks away fromthe carriage, I may secure to one of the vertical arms 20, or anyothersuitable portion of the rack, a hinged cross member 32 which beswung against the articles and the bar 21 as soon as the articles beingcoated have been mounted in position, being locked by a suitablefastening device as at 33, the articles being securely retained at alltimes in the rack irrespective of handling of the rack, and beingcapable of ready interchangement from one machine to another, and beingimpossible of separation from the rack until the locking device 33 hasbeen released.

I claim:

1. A device of the character described including a carriage havingsupporting arms and a plurality of, interchangeable rack members havingportions for interlocking engagement with the arms said rack memberseach having article receiving projections and adidtiona-l articlesteadying recesses aligned with the projections to steady articlesmounted thereon.

2. In a device of the character described, a work holding rackcomprising a main frame portion, a cross piece carried by the frameportion having a plurality of work receiving projections, a second crosspiece disposed beneath the first and having a plurality of recessesformed therein corresponding in number and position to the workreceiving projections of the first cross piece whereby said recesseswill receive the work suspended from the projections and hold the sameagainst transverse displacement, and a clamp member carried by theframehaving-portions overlying respectively the projections and therecesses to prevent disengagement of the work from either of said parts.

In testimony whereof I have aflixed my signature, in presence of twowitnesses.

I ALBERT E. NIAYNARDQ Witnesses:

Anion G. 'HASKELL,

ESTHER M. LAFLER.

